DOUG S HEADERS D333 7 Inch 8 Inch 4Tube Full Length Header Chevrolet Camaro Instruction Manual

: June 9, 2024
: DOUG S HEADERS

Table of Contents

DOUG S HEADERS D333 7 Inch 8 Inch 4Tube Full Length Header Chevrolet
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Camaro Instruction Manual

A PerTronix Performance Brand www.pertronixbrands.eom
909 599-5955

Installation Instructions & Warranty Information
D333 1970-81 Camaro, 1975-79 Nova
75-79 Buick Skylark Gran Sport, Wagons
1975-79 Olds Omega, 1975-79 Pontiac Phoenix
LS Engine Swap Long Tube Headers

PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This Product is LEGAL for Closed Course Competition use or Pre-Emissions Controlled Vehicles ONLY. It is Not Legal for use on any Emissions Controlled Vehicle for Street or Off Highway use. REV V2022

**WARNING:**
This product can expose you to chemicals including Lead, Nickel, Cadmium and Chromium which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

PLEASE READ BEFORE PROCEEDING
PerTronix0 thanks you for choosing a Doug’s Headers Product. To realize the potential of Doug’s Headers engineering and excellent fit, Please Read and Understand these instructions completely prior to starting the installation.

Check that you received all the parts listed on the parts list, if you have any concerns, please contact Per Tronix before continuing. Headers will have the part number stamped in the flange.

Many factors affect he installation of exhaust headers, including worn or aftermarket motor mounts, previous accident damage, aftermarket cylinder heads that may have relocated port or spark plug locations, suspension and steering changes, sagging of original unibody structures due to age.

Coating Notes: Coatings can be marred during installation if you are not careful. If you are breaking in a new motor, the extreme heat can alter the appearance of the coating and this is not a warranty issue. We recommend breaking in new motors with stock manifolds or an old set of headers.

We use sealing beads on all our headers. The raised bead creates a better seal virtually eliminating leaks if installed properly. It is important to install all header bolts lightly snug and then tighten to factory torque specs starting in the center and working outward.

Before starting, allow the vehicle to cool, disconnect the battery, and spray a penetrating oil on all hardware and fittings that will need to be removed. Once you remove your manifold, clean the sealing surface on the head of any old gasket debris or carbon build up.

Work Smart — Work Safe! Most Header and Exhaust Installation are best performed on a lift. If a lift is not available, raise the vehicle and support on quality Jack Stands on level ground. Do not rely on a jack!

Note: Requires LS1 adapter plate kit Doug’s P/N SK100

Remove bolts from headpipe to exhaust manifolds.
Remove the engine coil covers, spark plug wires and spark plugs.
Disconnect the O2 sensor wiring.
Remove the oil dipstick and tube.
Remove both exhaust manifolds.
From below work the passenger side header into place.
Apply Anti Seize to the supplied headers bolts. Insert the gasket and using the supplied header bolts and washers bolt the header to the cylinder head. Tighten all header bolts evenly starting in the center and working your way out.
Reinstall the dip stick tube.
From below work the driver’s side header into place.
Apply Anti Seize to the supplied headers bolts. Insert the gasket and using the supplied header bolts and washers bolt the header to the cylinder head. Tighten all header bolts evenly starting in the center and working your way out.
Apply sensor safe Anti Seize to the 02 sensors and install them in the headers, If needed use the supplied 02 sensor harness extensions and plug the sensors into the wiring harness.
Using the supplied V-Band Clamps bolt the reducers to the headers, build exhaust to suit.
Reconnect the battery cable

IMPORTANT CHECK LIST
Be sure that all brake lines, transmission lines, and fuel lines are clear of headers and/or connector pipes.
All spark plug wires, battery cables, or other electrical components should be clear of headers and/or connector pipes.
If dipstick tube was removed, make sure it is installed properly and that the dipstick has been replaced.
Double-check the tightness of all bolts including brackets and accessories.

START THE ENGINE
Start the engine and allow it to warm up to operating temperature. Check for any unusual noises or exhaust leaks. If everything is OK, stop the engine and tighten all bolts while the engine is still warm. NOTE: Check the bolts periodically to make sure they have not loosened. Re-tighten after the first 500 miles and then again at 1000 miles

Parts List

1 Left side header
1 Right side header
2 Header gasket
12 Bolt, header, M8-1.25 x 26
12 8mm Lock Washer
2 V-Band Clamps
2 V-band reducers
2 Doug’s Stickers

DOUG’S HEADERS LIMITED WARRANTY

All Doug’s Headers and Exhaust products are guaranteed, to the original purchaser, to be free of defects in material and workmanship for one year from date of purchase. This warranty covers the replacement or repair of the product and does not cover the cost of removal and installation, customer applied coatings, or Any discoloration or corrosion of finished surfaces. Damage or product failure resulting from collision, improper installation, off road use, road hazards, the use of exhaust insulating wrap, or rust occurring after installation is not covered by the warranty. This warranty extends only to the original purchaser.

Should a part be deemed defective, it should be returned to the original selling retailer and must be accompanied by the sales receipt. If there is no retailer in your area, contact PerTronix direct for a return authorization and return the part prepaid to the factory for inspection. Per Tronix reserves the right to replace or repair the alleged defective part and return the part freight collect.

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